Drip tape manufacturing process
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 16, 2003
Grant Date -
N/A
app pub date -
Nov 9, 2000
filing date -
Apr 18, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method of forming tubular irrigation drip tape includes the steps of a) extruding a web of material having a pair of longitudinally extending, substantially parallel marginal edges; b) heating a center area of the web between and substantially parallel to the marginal edges utilizing a first focused infrared heating device; c) applying one or more secondary flow path components to the center area; d) heating the marginal edges, utilizing a second and third focused infrared heating device; e) folding the web such that the marginal edges overlap to form a seam; and f) applying pressure to the seam.
First Claim
Family
International Classification(s)
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- [Patents Count]
Cited Art Landscape
| Patent Info | (Count) | # Cites | Year |
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| 4473191 Drip irrigation system employing flow regulation | 45 | 1982 | |
| 4430020 Drip irrigation hose | 32 | 1982 | |
| 4642152 Drip irrigation system employing flow regulation | 30 | 1984 | |
| 4749535 Method and apparatus for forming profiled plastic products involving extrusion, roller shaping and cutting | 10 | 1986 | |
| 5181532 Flow control | 12 | 1992 | |
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| 4984739 Drip irrigation hose | 33 | 1988 | |
| 5123984 Method and apparatus for forming ports in drip irrigation hose | 35 | 1990 | |
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| 5324379 Method and apparatus for producing drip irrigation conduit | 22 | 1993 | |
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| 5282916 Method and apparatus for making drip irrigation devices | 25 | 1992 | |
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| 5688072 Agricultural drip tape | 8 | 1995 | |
| 6120634 Method and apparatus for forming agricultural drip tape | 21 | 1997 | |
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| 4874132 Drip irrigation apparatus | 23 | 1983 | |
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| 5022940 Process of making a drip irrigation conduit | 62 | 1989 | |
| 5122044 Apparatus for making a drip irrigation conduit | 19 | 1990 | |
| 5207386 Flow emitter units moulds for use in the manufacture thereof | 26 | 1991 | |
| 5324371 Process for producing a drip irrigation conduit | 31 | 1993 | |
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| 4555282 Method of and means for bonding synthetic resin profiled fasteners to film substrate | 69 | 1983 | |
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| 4880167 Irrigation hose with linear turbulent flow emitter | 31 | 1988 | |
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| 5282578 Self-protecting irrigation hose and method | 29 | 1993 | |
| 5333793 Drip irrigation hose with pressure compensation and method for its manufacture | 24 | 1993 | |
| 5458712 Process for forming drip irrigation hose with pressure compensation | 12 | 1994 | |
| 5522551 Drip irrigation hose and method for its manufacture | 26 | 1994 | |
| 5634595 Drip irrigation hose and method for its manufacture | 12 | 1996 | |
| 5722601 Drip irrigation hose and method of its manufacture | 18 | 1996 | |
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| 4722759 Apparatus for fabricating drip irrigation tape | 34 | 1985 | |
| 5246171 Drip irrigation tape including a series of alternately offset elongated chambers | 20 | 1992 | |
| 5318657 Drip irrigation tape and method of manufacture | 23 | 1993 | |
| 5387307 Drip irrigation tape and method of manufacture | 11 | 1994 | |
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| 4323533 Rotary forming of articles | 30 | 1980 | |
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| * 4702787 Process for making drip irrigation lines | 20 | 1983 | |
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| 5271786 Method and apparatus for producing pipes for drip irrigation | 32 | 1991 | |
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| 5076498 Irrigation tape and method of producing same | 8 | 1989 | |
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| * 5522954 Non-contact bonding of plastics | 22 | 1994 | |
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| 5163622 Drip irrigation line and method of making same | 27 | 1990 | |
| 5203503 Drip irrigation lines | 33 | 1991 | |
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| * 6350500 Tubular composite containers having folded unsupported film liners | 3 | 1999 | |
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